Question 1

Farming, as it is currently practiced, may not be sustainable. One observation supporting this assertion is the

Accepted Answer

A)  extensive erosion of top soil that occurs with conventional farming. 
B)  increase in the cost of fertilizer. 
C)  increase in the cost of diesel used to power most farm equipment. 
D)  irregular weather patterns that global warming has introduced. 
A)  extensive erosion of top soil that occurs with conventional farming. 
B)  increase in the cost of fertilizer. 
C)  increase in the cost of diesel used to power most farm equipment. 
D)  irregular weather patterns that global warming has introduced.

Question 2

Breeding plants for modern farming has had some unintentional consequences. Plant uniformity in size and maturation date is ideal for mechanical harvesting but

Accepted Answer

A)  when food preferences change large plantings can quickly become unprofitable. 
B)  large plantings and flower uniformity discourages the action of natural pollinators. 
C)  when plants are highly uniform they are also uniformly vulnerable to the same disease which can rapidly destroy an entire crop. 
D)  All of the above 
A)  when food preferences change large plantings can quickly become unprofitable. 
B)  large plantings and flower uniformity discourages the action of natural pollinators. 
C)  when plants are highly uniform they are also uniformly vulnerable to the same disease which can rapidly destroy an entire crop. 
D)  All of the above

Question 3

The amount of crop, measured by weight or by volume, produced in a specific amount of space is the _____.

Accepted Answer

The answer of The amount of crop, measured by weight...

Question 4

Plant breeding has been utilized for centuries to improve the quality of crop plants. One of the most successful breeding methods uses hybrids, which are produced when

Accepted Answer

A)  highly inbred varieties of plants are mated to each other. 
B)  distantly related species with beneficial features are mated to each other. 
C)  one or more genes from one variety of plant is inserted into another variety. 
D)  farmers provide relatively little care to a crop and allow natural selection to identify the hardiest variety. 
A)  highly inbred varieties of plants are mated to each other. 
B)  distantly related species with beneficial features are mated to each other. 
C)  one or more genes from one variety of plant is inserted into another variety. 
D)  farmers provide relatively little care to a crop and allow natural selection to identify the hardiest variety.

Question 5

The process of inserting a gene unique to one species into a different species is called___________________.

Accepted Answer

The answer of The process of inserting a gene unique...

Question 6

In addition to producing seeds with very high protein content grass pea can also survive in soil with very low nitrogen content because its

Accepted Answer

A)  leaves can extract nitrogen from the air. 
B)  roots extract nitrogen from soil particles. 
C)  leaves trap insects and extract the nitrogen from the insect body. 
D)  roots are associated with bacteria that fix nitrogen. 
A)  leaves can extract nitrogen from the air. 
B)  roots extract nitrogen from soil particles. 
C)  leaves trap insects and extract the nitrogen from the insect body. 
D)  roots are associated with bacteria that fix nitrogen.

Question 7

Plant breeding techniques use artificial _________ to improve crops.

Accepted Answer

The answer of Plant breeding techniques use artificial _________ to...

Question 8

Although enough food is grown to meet the current world population, malnutrition continues, in part, because

Accepted Answer

A)  many malnourished people are also very poor and can not compete in world markets to purchase food. 
B)  global warming causes food to perish before the can be transported. 
C)  local and familiar crops are culturally entrained despite providing incomplete nutrition. 
D)  malnourished people are often reluctant to trust the motives of food aid organizations. 
A)  many malnourished people are also very poor and can not compete in world markets to purchase food. 
B)  global warming causes food to perish before the can be transported. 
C)  local and familiar crops are culturally entrained despite providing incomplete nutrition. 
D)  malnourished people are often reluctant to trust the motives of food aid organizations.

Question 9

The increase in the growth rate of wheat and rice yield continues to be greater than the increase in the growth rate of human population size.

Accepted Answer

A) True 
 B)False

Question 10

___________ is a managed system that cultivates fish and shellfish for human consumption.

Accepted Answer

The answer of ___________ is a managed system that cultivates...

Question 11

More soil erosion occurs in the early spring than in the summer.

Accepted Answer

A) True 
 B)False

Question 12

Humans utilize a surprisingly small number of food crops; over 80 percent of the calories consumed by people are produced by

Accepted Answer

A)  wheat and rice. 
B)  corn and potatoes. 
C)  sweet potatoes and manioc. 
D)  the above crops combined 
A)  wheat and rice. 
B)  corn and potatoes. 
C)  sweet potatoes and manioc. 
D)  the above crops combined

Question 13

Grass pea seeds contain twice the protein of wheat.

Accepted Answer

A) True 
 B)False

Question 14

Among the many beneficial qualities of amaranth is its high lysine content. Why is high lysine a desirable quality?

Accepted Answer

A)  It is a natural insecticide, amaranths are rarely impacted by insects. 
B)  Lysine is a natural fertilizer; after harvesting the seeds the stalks are plowed back into the soil. 
C)  It is one of the amino acids that humans can not synthesize and must be obtained from the diet. 
D)  Lysine is a lipid; when pressed amaranth seeds produce large quantities of oil. 
A)  It is a natural insecticide, amaranths are rarely impacted by insects. 
B)  Lysine is a natural fertilizer; after harvesting the seeds the stalks are plowed back into the soil. 
C)  It is one of the amino acids that humans can not synthesize and must be obtained from the diet. 
D)  Lysine is a lipid; when pressed amaranth seeds produce large quantities of oil.

Question 15

Organic farming is one of several new farming strategies. Although the yield are somewhat reduced organic farming is attractive because it

Accepted Answer

A)  minimize or avoids completely the use of synthetic chemicals. 
B)  focuses exclusively on genetically modified food crops. 
C)  has developed strains that can tolerate exposure to herbicides. 
D)  doesn't utilize plowing which has been shown to damage top soil. 
A)  minimize or avoids completely the use of synthetic chemicals. 
B)  focuses exclusively on genetically modified food crops. 
C)  has developed strains that can tolerate exposure to herbicides. 
D)  doesn't utilize plowing which has been shown to damage top soil.

Question 16

One reason amaranths hold great promise as a food plant is that

Accepted Answer

A)  they can interbreed with other established major food plants. 
B)  their seeds are high in protein and lysine relative to traditional food crops. 
C)  it is biennial, producing two crops per year rather than a single crop. 
D)  amaranth can be planted at densities up to 5 times greater than corn or wheat. 
A)  they can interbreed with other established major food plants. 
B)  their seeds are high in protein and lysine relative to traditional food crops. 
C)  it is biennial, producing two crops per year rather than a single crop. 
D)  amaranth can be planted at densities up to 5 times greater than corn or wheat.

Question 17

A comparison of the amount of grain needed to produce one kilogram of live animal weight reveals that _______ is the least expensive means of producing animal protein.

Accepted Answer

A)  raising cattle on pastureland 
B)  raising sheep on pastureland 
C)  aquaculture 
D)  raising pigs in feedlots 
A)  raising cattle on pastureland 
B)  raising sheep on pastureland 
C)  aquaculture 
D)  raising pigs in feedlots

Question 18

Which of the following would maximize the use of existing cropland production when producing animal protein?

Accepted Answer

A)  Use corn stalks and wheat straw to feed livestock. 
B)  Use corn kernels to feed poultry. 
C)  Use wheat grain to feed pigs. 
D)  Use wheat grain and wheat straw to feed beef cattle. 
A)  Use corn stalks and wheat straw to feed livestock. 
B)  Use corn kernels to feed poultry. 
C)  Use wheat grain to feed pigs. 
D)  Use wheat grain and wheat straw to feed beef cattle.

Question 19

People get food from three main food systems: croplands, ocean fisheries, and __________.

Accepted Answer

The answer of People get food from three main food...

Question 20

Meeting food demands for the future will require increases in crop production, most will come from increasing

Accepted Answer

A)  the amount of cropland after the conversion of unproductive rainforest. 
B)  crop yields through selective breeding and genetic engineering. 
C)  the worldwide availability and use of fertilizers. 
D)  the worldwide availability and use of pesticides. 
A)  the amount of cropland after the conversion of unproductive rainforest. 
B)  crop yields through selective breeding and genetic engineering. 
C)  the worldwide availability and use of fertilizers. 
D)  the worldwide availability and use of pesticides.

Exam 44: Feeding a Hungry Planet

Farming, as it is currently practiced, may not be sustainable. One observation supporting this assertion is the

Breeding plants for modern farming has had some unintentional consequences. Plant uniformity in size and maturation date is ideal for mechanical harvesting but

The amount of crop, measured by weight or by volume, produced in a specific amount of space is the _____.

Plant breeding has been utilized for centuries to improve the quality of crop plants. One of the most successful breeding methods uses hybrids, which are produced when

The process of inserting a gene unique to one species into a different species is called___________________.

In addition to producing seeds with very high protein content grass pea can also survive in soil with very low nitrogen content because its

Plant breeding techniques use artificial _________ to improve crops.

Although enough food is grown to meet the current world population, malnutrition continues, in part, because

The increase in the growth rate of wheat and rice yield continues to be greater than the increase in the growth rate of human population size.

___________ is a managed system that cultivates fish and shellfish for human consumption.

More soil erosion occurs in the early spring than in the summer.

Humans utilize a surprisingly small number of food crops; over 80 percent of the calories consumed by people are produced by

Grass pea seeds contain twice the protein of wheat.

Among the many beneficial qualities of amaranth is its high lysine content. Why is high lysine a desirable quality?

Organic farming is one of several new farming strategies. Although the yield are somewhat reduced organic farming is attractive because it

One reason amaranths hold great promise as a food plant is that

A comparison of the amount of grain needed to produce one kilogram of live animal weight reveals that _______ is the least expensive means of producing animal protein.

Which of the following would maximize the use of existing cropland production when producing animal protein?

People get food from three main food systems: croplands, ocean fisheries, and __________.

Meeting food demands for the future will require increases in crop production, most will come from increasing

The Nature of Science and the Characteristics of Life

Organizing the Diversity of Life

Major Groups of Living Organisms

Chemical Building Blocks

Cell Structure and Internal Compartments

Cell Membranes, Transport, and Communication

Energy and Enzymes

Photosynthesis and Cellular Respiration

Cell Division

Patterns of Inheritance

Chromosomes and Human Genetics

DNA

From Gene to Protein

Control of Gene Expression

DNA Technology

How Evolution Works

Evolution of Populations

Adaptation and Speciation

The Evolutionary History of Life

Maintaining the Internal Environment

Animal Nutrition and Digestion

Gas Exchange

The Circulatory System

Animal Hormones

The Nervous System

Sensing the Environment

Skeletons, Muscles, and Movement

Defenses against Disease

Reproduction and Development

Animal Behavior

Plant Structure, Nutrition, and Transport

Plant Growth and Reproduction

The Biosphere

Growth of Populations

Interactions among Organisms

Communities of Organisms

Ecosystems

Global Change

Biodiversity and People

Cancer: Cell Division Out of Control

Harnessing the Human Genome

Humans and Evolution

Smoking--Beyond Lung Cancer

Building a Sustainable Society

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